Well, I never did get that [expletive deleted] W-pipe loose, and IDK WTF I'm going to do because it has the wire that goes to the A/C compressor threaded through it and I don't see any easy way to disconnect it. But I was able to tilt it up enough to get a good look inside the VOD and holy antifreeze leak, Batman!
This is at the firewall end of the engine: 20171121_224634[1].jpg
I took a few more but they didn't turn out. But basically the whole valley was full of it. I shop-vacced up as much as I could and then pumped the pressure tester to about 7 and it was definitely dripping from the fat hose behind the water pump. Is it supposed to be this bulgy?
20171121_224605[1].jpg
It looked like maybe it was a little wet at the that t-junction at the firewall end of the engine (the one with the line coming off the forward end of the coolant bottle), too, but not as obviously drippy as the fat hose.
Also I lost a washer off the fuel lines and now I'm paranoid that it ended up in one of the cylinders. If I stuck the nozzle of my Dyson vac on the cylinder opening, would it hurt anything?